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DRV3211QPFPQ1 Datasheet(PDF) 11 Page - Texas Instruments |
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DRV3211QPFPQ1 Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 38 page  Do not switch to RES LOW when the VCC LOW time is less than tRES. tRES tRES Ignore transient voltage falling Switch to NMI-LOW after tRES delay when VCC is lower than VNMIL VNMI+VHS VB VCC VSTN NMI (Internal signal) RES is HIGH after tON from NMI-HIGH if internal clock is not generated (In case of malfunction). RES signal should remain in low voltage (< -0.4 V) and in this case, controlled CPU should be in tRH RES is LOW at NMI-LOW. tON tRL tOFF tON Pwth RES PRN Detecting only rising edge of PRN signal WDEN Switch to RES LOW if PRN stays at a High or LOW level. RES is LOW at NMI-LOW. If WDEN is LOW (or OPEN), and there is abnormal PRN: RES is active. If WDEN is HIGH, and there is abnormal PRN: no operation. RES is HIGH after tON from of NMI-HIGH. VNMI tRES Not Recommended for New Designs 11 DRV3211-Q1 www.ti.com SLVSBS4A – DECEMBER 2012 – REVISED JULY 2016 Product Folder Links: DRV3211-Q1 Submit Documentation Feedback Copyright © 2012–2016, Texas Instruments Incorporated Electrical Characteristics (continued) VB = 12 V, TA = –40°C to 125°C (unless otherwise specified) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIL Input threshold logic low 0.3 × VCC V Ru Input pullup resistance 50 100 150 kΩ Rd Input pulldown resistance 50 100 150 kΩ OUTPUT BUFFER 1 AND 2 VOH Output level logic high Isink = 2.5 mA 0.9 × VCC V VOL Output level logic low Isource = 2.5 mA 0.1 × VCC V OUTPUT BUFFER 3 R_RES Pullup resistor 1.5 3 4.5 kΩ VOL Output level logic low Isource = 2 mA 0.1 × VCC V 6.5 Supply Voltage and Current VB = 12 V, TA = –40°C to 125°C (unless otherwise specified) PARAMETER CONDITIONS MIN TYP MAX UNITS SUPPLY INPUT VB VB Supply voltage 5.3 12 18 V IVB VB Operating current VB = 5.3 ~18 V, No PWM 20 35 mA NOTE: WDEN = High, VCC undervoltage condition sets RES = Low Figure 1. Watchdog Timing Chart |
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